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Apocynaceae
Asclepias
Asclepias tuberosa subsp. rolfsii
Asclepias tuberosa subsp. rolfsii
No common name
Woodson (Britton ex Vail) 1944 -
Ann. Missouri Bot. Gard. 31:368. 1944
Specifications
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Synonyms
Asclepias rolfsii
Britton ex Vail
Asclepias tuberosa var. rolfsii
(Britton ex Vail) Shinners